Liquid-soap dispenser



E. L. MORRIS.

LIQUID SOAP DISPENSER.

APPLICATION FILED MAY 29, 1919.

1,361,891. Patented Dec. 14, 1920.

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UNITED STATES PATENT OFFICE.

EDGAR L. MORRIS, OF CHICAGO, ILLINOIS, ASSIGNOR TO U. S. SANITARY SPECIALTIES CORPORATION, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

LIQUID-SOAP DISPENSER.

Specification of Letters Patent.

Patented Dec. 14, 1920.

Application filed May 29, 1919. Serial No. 300,704.

T 0 all whom it may concern.

Be it known that I, EDGAR L. MORRIS, a citizen of the United States, residing at Chicago, in the county of ook and State of Illinois. have invented certain new and useful Improvements in Liquid-Soap Dispensers, of which the following is a specification.

My invention relates to soap dispensers of the type comprising a barrel or cylinder communicating with a source of supply and having spring-controlled means operable to discharge liquid soap in measured quantities.

()ne object of the invention is to provide a soap dispenser of the character indicated which is heat in appearance and whereinthe parts are so constructed and arranged as to produce a device which is efficient in operation and is capable of withstanding long and severe usage.

A further object of the invention is to produce a soap dispenser in which leakage of the liquid soap from the device is eifectively prevented and which is otherwise economical in operation.

The objects of the invention thus generally stated. together with other and ancillary advantages may be obtained from the construction and arrangement illustrated in the accompanving drawings forming part .hereof in which Figure 1 is a side elevation of a soap dispenser embodying the features of my invention. Fig. 1 is an end elevation of the same. Fig. 2 is a vertical central sectional view through the dispenser. Fig. 3 is a similar view, but showing the parts in a different position from that shown in Fig. 2.

The device comprises a barrel 4 closed at its forward or outer end and having a screw-threaded engagement at its rear or inner end with a head or fitting 5 which has a screw-threaded stem 5 by means of which the device may be supported, as, for example, in a supply pipe line (not shown). Said fitting has a longitudinal passage 6 extending therethrough and communicating at its inner end with the source of supply.

The outer end of the barrel 4 is provided with an opening through which an operating stem 7 extends, a packing gland 8 being preferably provided around the stem, and on its inner end said stem has a plunger 9.

On the outer end of the stem is provided the usual push button or head 7.

To conduct liquid soap from the inner end of the barrel to the outer end thereof so that it may be acted upon by said plunger 9 in the operation of discharging a quantity of soap, I provide a suitable passage-way. Herein this passage-Way is formed by a passage 10 extending longitudinally of the barrel in one side thereof and communicating at its outer end with the forward end of the barrel as by means of ports 11 and 12. At its inner end the passage 10 communicates with a port 13 which opens into an annular space formed in the inner end of the barrel between the fitting 5 and a screw-threaded plug or block 14 which is entered in the barrel. The passage 6 in the fitting also opens into said annular space, so that it will be apparent that the liquid is free to flow from the source of supply to the forward end of the barrel. If desired, the wall of the barrel at the side containing the passage 10 may be made of slightly greater thickness than the other sides of the barrel, in order to conveniently accommodate said passage.

The plunger 9 is normally held against the outer end of the barrel and in spaced relation relative to a second plunger 15 by means of a pair of coiled springs 16 and 17. The spring 16 is made of substantially greater strength than the spring 17 and bears between the block 14 and the plunger 15 to hold the latter against rearward movement, while the spring 17 is so arranged as to exert pressure upon the plungers 9 and 15, holding the plunger 9 against its seat formed by the forward end of the barrel.

Herein the spring 16 is entered at its inner end in a socket 18 provided in the block 14 and at its outer endit surrounds a stem 19 on the rear side of the plunger 15 adapted to enter the socket 18. Similarly the plunger 9 and its stem 7 have a socket 20 therein for receiving the outer end of the spring 17, and the plunger 15 has a stem 21 on its forward side adapted to enter the socket 20 and having a reduced portion 22 for receiving the inner end of the spring.

The port 11 which opens from the passage 10 into the forward end of the barrel. is arranged so that when the plunger 9 is in its outermost position (Fig. 2), the soap will flow into the space between it and the plunger .15. Thereupon a rearward movement of the plunger against the action of the spring 17 compresses the liquid until the pressure upon the plunger 15 becomes sufliciently great to overcome the action of the spring 16, when it will move inwardly. In this movement of the plunger 15 it passes an outlet or discharge port 23 just prior to reaching the inner limit of its movement (Fig. 3) whereupon the chargeof soap passes out forcibly through the discharge ort.

p To provide against leakage of soap past the plungers 9 and 15, they are provided with packing rings 24 and 24 of leather, or the like, suitably secured in position. A seat 25 is formed in the barrel for the plunger 15 against which seat the packing ring on the plunger is normally held by the spring 16. This construction insures that no soap can escape from the barrel through the discharge port except when the device is operated.

Upon the return stroke of the plungers the soap which has flowed into the-barrel in front of the plunger 9 is forced'back into the passage 10 through the port-s 11 and 12, the port 12 being located at the extreme outer end of the barrel and in the normal position of the ports closed by the plunger 9 seated upon the outer end of the barrel. This passage of the soap into the passage 10 is of course resisted by the pressure of the soap from the source of supply until the plunger 9 has returned toward its normal position far enough to permit the soap on its forward side to pass to the rear side thereof through the port 11. The ports 11, and 12 with the forward end of the passage 10 thus form a bypass around the plunger 9 as it approaches its normal position, thereby relieving the pressure upon its forward side. It will thus be seen that in the initial return movements of the plungers under the action of the springs 16 and 17, the parts are effectively cushioned by the liquid at the forward end of the barrel, and that such cushioning effect of the liquid diminishes as the parts approach their normal position. This cushioning of the plungers, in addition to decreasing the wear and tear upon the parts, is advantageous in that it tends to prevent the wasteful operation of the dispenser, the slow return of the parts to initial position making it impossible for the user to operate the dispenser a number of times in rapid succession.

It will be seen that I have provided a soap dispenser of advantageous construction and arrangement in which the leakage of soap is effectively prevented, and although I have illustrated and described the invention with considerable particularity, it will be understood that in the interpretation of the ap pended claims-the invention is not to be restricted in scope except as may be necessitated by the state of the prior art.

. I claim as my invention:

1. A soap dispenser having, in combination, abarrel having a dischar e outlet, a pair of plungers in said barre, a air of springs for normally holding said plungers in spaced relation, said spring being located externally of the space between the plungers, means for admitting liquid soap intothe barrel between said plungers, and means for moving one of said plungers in the barrel and thereby the other plunger past said dis-- charge opening.

2. A soap dispenser having, in combination, a barrel, a plunger in the outer end of the barrel having an operatin stem extending therethrough, a second p unger located centrally of the barrel, a spring inclosed within the first mentioned plunger and its stem and exerting pressure on the second plunger to form a space between the plungers, a stationary part in the inner end of the barrel, a spring bearing between said part, and the second plunger, and of greater strength than the first mentioned spring, and means conducting a quantity of soap into the space between said plungers, there being a port through which said soap is adapted to discharge when said plungers have been moved inwardly upon the operation of said stem.

3. A soap dispenser having, in combination, a barrel, a pair of plungers operable in the barrel, spring means normally holding said plungers in spaced relation, means for operating one of said plungers and thereby the other one of said plungers, and means for admittin a quantity of liquid soap between said p ungers, there being a discharge outlet through which the soap between the plungers is permitted to escape when the plungers are moved forwardly, each of said plungers having a. packing ring secured thereto to prevent leaka e of soap around it and each of said packlng rings having a seat in the barrel.

4. A soap dispenser comprising, in combination, a. barrel having a passage extending longitudinally of one side wall and ports opening into the barrel at opposite ends of said passage, a fitting closing the rear end of said barrel and providedwith a. passage adapted to communicate with a source of supply, means providing a passageway connecting the forward end of said passage in the fitting with the port at the rear end of the barrel, a pair of plungers in said barrel normally held in spaced relation, said port at the forward end of the barrel being located between said plungers when in their normal position, and means for operating the plungers, there being a discharge port in the barrel through which soap is discharged when one of said plungers is moved 7 past it.

5. A soap dispenser having, in combination, a barrel having a discharge port and an annular seat located forwardly of said port, a plunger having a packing ring on its forward face, a spring for holding said plunger in position with its packing ring engaging said seat, a second plunger, a section, a barrel having a discharge port and an annular seat located forwardly of said port, a plunger, a spring adapted to hold said plunger against said seat, a second plunger having an operatin stem extending through the forward end 0 the barrel, said second plunger and its stem having a socket therein, a spring of less strength than the first mentioned spring entered in said socket, a stem on the first plunger having a portion entered in said socket and adapted to receive the pressure exerted by said second spring whereby tohold said plun ers in spaced relation, and means for con ucting liquid soap to the space between said plungers whereby when the plungers are moved rearwardly soap will be discharged through said discharge port.

A soap dispenser having, in combination, a barrel having a discharge port and an annular seat locatedforwardly of said port, a plunger having a stem on its rear side, a stationary part in the rearend of the barrel having a socket therein of. greater diameter than said stem, a spring entered in said socket and surrounding said stem whereby to hold said plunger against said seat, a second plunger, spring means normally holding said second plunger spaced from the first plunger, means for conducting liquid soap to the space between the plun.-

gers, and means for operating the first plunger and thereby the second plunger past said discharge port.

8. A soap dispenser having, in combination, a barrel having a discharge port and an annular seat located forwardly of said port, a plunger, spring means normally holding said plunger against said seat, a second plunger, spring means normally holding said second plunger seated against the forward end of said barrel, said barrel having a soap inlet port located rearwardly of the normal position of said second plunger, and a bypass for permitting the passage of soap from in front of said second plunger to the rear side thereof, an operating stem extending through the forward end of thebarrel and arranged to operate said second plunger and thereby the first plunger past said discharge port, and a packing gland surrounding said operating stem.

9. A soap dispenser having, in combination, a passage communicating with a source of supply, and a discharge port, and a pair of spring-controlled plungers operable in said barrel to force liquid through said discharge port, there being a port in the barrel communicating with said passage and admitting liquid soap to the space between the plungers and a second port in the barrel also communicating with said passage and opening into the barrel at the forward end thereof,

10. A soap dispenser having, in co-mbina- EDGAR L. MORRIS.

'end of the barrel and the, adjacent plunger as the plungers move to their 

